Features
- Titanium nitride coating for enhanced surface hardness and wear resistance
- Multiple step sizes to cover a range of hole diameters with one bit
- HSS (high-speed steel) construction
Specifications
| Model Number | SDT10 |
| Version | HSS-TiN |
| Step Diameter (Range), From | 1/4 in |
| Step Diameter (Range), To | 1 3/8 in |
| Shank Diameter | 3/8 in |
| Pack Quantity | 1 |
| Intended Application | Metal drilling |
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High-speed steel (HSS) step drill bit with a titanium nitride (TiN) coating. Provides a range of step diameters for drilling different hole sizes and is intended for metal drilling applications.
Project Ideas
Business
Mobile Hole-Right Service
Offer on-site precision hole making and resizing in metal for fabricators, sign shops, vehicle upfitters, and homeowners. Clean holes from 1/4 in to 1 3/8 in with minimal setup; price per hole or per visit.
Custom 12V Accessory Panels
Design and sell pre-drilled aluminum switch/charging panels for boats, vans, and overland rigs. Round components like USB chargers and 12V sockets often need ~1 1/8 in; toggles ~1/2 in—perfect for a step bit. Offer finishes, labeling, and harness add-ons.
Sheet-Metal Drilling Workshops
Host paid classes teaching layout, center-punching, step drilling, and deburring on thin metal. Students build a luminary or planter; revenue from tuition, kits, and tool sales/upgrades.
HVAC/Duct Retrofit Ports
Partner with HVAC contractors to add sensor ports, service access, and humidifier feed-throughs in sheet-metal ducts. Step drilling produces fast, clean openings that reduce install time; bill per port or per job.
Enclosure & Conduit Prep Service
Prep metal junction boxes and control enclosures with precise holes for cable glands and conduit. Common trade sizes: 7/8 in for 1/2 in EMT, 1 1/8 in for 3/4 in EMT, 1 3/8 in for 1 in EMT—covered by the bit’s range. Sell to electricians, solar installers, and OEMs.
Creative
Gradient Metal Luminary Lamps
Turn thin steel or aluminum sheet/tubing into luminaries by laying out patterns and drilling stepped holes from 1/4 in up to 1 3/8 in. The step bit can deburr as you go for clean edges and beautiful light spill. Finish with patina or powder coat and add LED lighting.
Guitar Pedal & Amp Enclosures
Customize aluminum stomp boxes and faceplates by sizing holes precisely for footswitches (~1/2 in), potentiometers (~3/8 in), 1/4 in jacks, and cable glands. Use a 1/4 in hole with a grommet for LEDs. The TiN coating helps keep edges crisp in soft aluminum.
Custom Planters with Bulkhead Fittings
Build metal planters and use the step bit to add 1/4 in drainage holes and 1–1 1/4 in openings for bulkhead fittings or hose pass-throughs. Clean, burr-free edges protect liners and gaskets for leak-free irrigation.
BBQ/Smoker Airflow Mods
Improve grills and smokers by adding adjustable intake/exhaust holes and thermometer ports. Open vents incrementally (1/2 in to 1 in) to tune airflow. The step geometry lets you chamfer lightly for a professional finish.
Industrial Perforated Wall Art
Create geometric or gradient hole arrays in thin sheet metal and mount over contrasting backers or LED strips. Mix step sizes from 1/4 in to 1 3/8 in for depth and visual texture.